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Diffstat (limited to 'src/libnm-systemd-core/src/libsystemd-network/sd-ipv4ll.c')
-rw-r--r--src/libnm-systemd-core/src/libsystemd-network/sd-ipv4ll.c380
1 files changed, 0 insertions, 380 deletions
diff --git a/src/libnm-systemd-core/src/libsystemd-network/sd-ipv4ll.c b/src/libnm-systemd-core/src/libsystemd-network/sd-ipv4ll.c
deleted file mode 100644
index ff065fd1b6..0000000000
--- a/src/libnm-systemd-core/src/libsystemd-network/sd-ipv4ll.c
+++ /dev/null
@@ -1,380 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/***
- Copyright © 2014 Axis Communications AB. All rights reserved.
-***/
-
-#include <arpa/inet.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "sd-id128.h"
-#include "sd-ipv4acd.h"
-#include "sd-ipv4ll.h"
-
-#include "alloc-util.h"
-#include "ether-addr-util.h"
-#include "in-addr-util.h"
-#include "network-common.h"
-#include "random-util.h"
-#include "siphash24.h"
-#include "sparse-endian.h"
-#include "string-util.h"
-#include "util.h"
-
-#define IPV4LL_NETWORK UINT32_C(0xA9FE0000)
-#define IPV4LL_NETMASK UINT32_C(0xFFFF0000)
-
-#define IPV4LL_DONT_DESTROY(ll) \
- _cleanup_(sd_ipv4ll_unrefp) _unused_ sd_ipv4ll *_dont_destroy_##ll = sd_ipv4ll_ref(ll)
-
-struct sd_ipv4ll {
- unsigned n_ref;
-
- sd_ipv4acd *acd;
-
- be32_t address; /* the address pushed to ACD */
- struct ether_addr mac;
-
- struct {
- le64_t value;
- le64_t generation;
- } seed;
- bool seed_set;
-
- /* External */
- be32_t claimed_address;
-
- sd_ipv4ll_callback_t callback;
- void *userdata;
-
- sd_ipv4ll_check_mac_callback_t check_mac_callback;
- void *check_mac_userdata;
-};
-
-#define log_ipv4ll_errno(ll, error, fmt, ...) \
- log_interface_prefix_full_errno( \
- "IPv4LL: ", \
- sd_ipv4ll, ll, \
- error, fmt, ##__VA_ARGS__)
-#define log_ipv4ll(ll, fmt, ...) \
- log_interface_prefix_full_errno_zerook( \
- "IPv4LL: ", \
- sd_ipv4ll, ll, \
- 0, fmt, ##__VA_ARGS__)
-
-static void ipv4ll_on_acd(sd_ipv4acd *acd, int event, void *userdata);
-static int ipv4ll_check_mac(sd_ipv4acd *acd, const struct ether_addr *mac, void *userdata);
-
-static sd_ipv4ll *ipv4ll_free(sd_ipv4ll *ll) {
- assert(ll);
-
- sd_ipv4acd_unref(ll->acd);
- return mfree(ll);
-}
-
-DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_ipv4ll, sd_ipv4ll, ipv4ll_free);
-
-int sd_ipv4ll_new(sd_ipv4ll **ret) {
- _cleanup_(sd_ipv4ll_unrefp) sd_ipv4ll *ll = NULL;
- int r;
-
- assert_return(ret, -EINVAL);
-
- ll = new0(sd_ipv4ll, 1);
- if (!ll)
- return -ENOMEM;
-
- ll->n_ref = 1;
-
- r = sd_ipv4acd_new(&ll->acd);
- if (r < 0)
- return r;
-
- r = sd_ipv4acd_set_callback(ll->acd, ipv4ll_on_acd, ll);
- if (r < 0)
- return r;
-
- r = sd_ipv4acd_set_check_mac_callback(ll->acd, ipv4ll_check_mac, ll);
- if (r < 0)
- return r;
-
- *ret = TAKE_PTR(ll);
-
- return 0;
-}
-
-int sd_ipv4ll_stop(sd_ipv4ll *ll) {
- if (!ll)
- return 0;
-
- return sd_ipv4acd_stop(ll->acd);
-}
-
-int sd_ipv4ll_set_ifindex(sd_ipv4ll *ll, int ifindex) {
- assert_return(ll, -EINVAL);
- assert_return(ifindex > 0, -EINVAL);
- assert_return(sd_ipv4ll_is_running(ll) == 0, -EBUSY);
-
- return sd_ipv4acd_set_ifindex(ll->acd, ifindex);
-}
-
-int sd_ipv4ll_get_ifindex(sd_ipv4ll *ll) {
- if (!ll)
- return -EINVAL;
-
- return sd_ipv4acd_get_ifindex(ll->acd);
-}
-
-int sd_ipv4ll_set_ifname(sd_ipv4ll *ll, const char *ifname) {
- assert_return(ll, -EINVAL);
- assert_return(ifname, -EINVAL);
-
- return sd_ipv4acd_set_ifname(ll->acd, ifname);
-}
-
-int sd_ipv4ll_get_ifname(sd_ipv4ll *ll, const char **ret) {
- assert_return(ll, -EINVAL);
-
- return sd_ipv4acd_get_ifname(ll->acd, ret);
-}
-
-int sd_ipv4ll_set_mac(sd_ipv4ll *ll, const struct ether_addr *addr) {
- int r;
-
- assert_return(ll, -EINVAL);
- assert_return(addr, -EINVAL);
- assert_return(!ether_addr_is_null(addr), -EINVAL);
-
- r = sd_ipv4acd_set_mac(ll->acd, addr);
- if (r < 0)
- return r;
-
- ll->mac = *addr;
- return 0;
-}
-
-int sd_ipv4ll_detach_event(sd_ipv4ll *ll) {
- assert_return(ll, -EINVAL);
-
- return sd_ipv4acd_detach_event(ll->acd);
-}
-
-int sd_ipv4ll_attach_event(sd_ipv4ll *ll, sd_event *event, int64_t priority) {
- assert_return(ll, -EINVAL);
-
- return sd_ipv4acd_attach_event(ll->acd, event, priority);
-}
-
-int sd_ipv4ll_set_callback(sd_ipv4ll *ll, sd_ipv4ll_callback_t cb, void *userdata) {
- assert_return(ll, -EINVAL);
-
- ll->callback = cb;
- ll->userdata = userdata;
-
- return 0;
-}
-
-int sd_ipv4ll_set_check_mac_callback(sd_ipv4ll *ll, sd_ipv4ll_check_mac_callback_t cb, void *userdata) {
- assert_return(ll, -EINVAL);
-
- ll->check_mac_callback = cb;
- ll->check_mac_userdata = userdata;
-
- return 0;
-}
-
-int sd_ipv4ll_get_address(sd_ipv4ll *ll, struct in_addr *address) {
- assert_return(ll, -EINVAL);
- assert_return(address, -EINVAL);
-
- if (ll->claimed_address == 0)
- return -ENOENT;
-
- address->s_addr = ll->claimed_address;
-
- return 0;
-}
-
-int sd_ipv4ll_set_address_seed(sd_ipv4ll *ll, uint64_t seed) {
- assert_return(ll, -EINVAL);
- assert_return(sd_ipv4ll_is_running(ll) == 0, -EBUSY);
-
- ll->seed.value = htole64(seed);
- ll->seed_set = true;
-
- return 0;
-}
-
-int sd_ipv4ll_is_running(sd_ipv4ll *ll) {
- assert_return(ll, false);
-
- return sd_ipv4acd_is_running(ll->acd);
-}
-
-static bool ipv4ll_address_is_valid(const struct in_addr *address) {
- assert(address);
-
- if (!in4_addr_is_link_local(address))
- return false;
-
- return !IN_SET(be32toh(address->s_addr) & 0x0000FF00U, 0x0000U, 0xFF00U);
-}
-
-int sd_ipv4ll_set_address(sd_ipv4ll *ll, const struct in_addr *address) {
- int r;
-
- assert_return(ll, -EINVAL);
- assert_return(address, -EINVAL);
- assert_return(ipv4ll_address_is_valid(address), -EINVAL);
-
- r = sd_ipv4acd_set_address(ll->acd, address);
- if (r < 0)
- return r;
-
- ll->address = address->s_addr;
-
- return 0;
-}
-
-#define PICK_HASH_KEY SD_ID128_MAKE(15,ac,82,a6,d6,3f,49,78,98,77,5d,0c,69,02,94,0b)
-
-static int ipv4ll_pick_address(sd_ipv4ll *ll) {
- _cleanup_free_ char *address = NULL;
- be32_t addr;
-
- assert(ll);
-
- do {
- uint64_t h;
-
- h = siphash24(&ll->seed, sizeof(ll->seed), PICK_HASH_KEY.bytes);
-
- /* Increase the generation counter by one */
- ll->seed.generation = htole64(le64toh(ll->seed.generation) + 1);
-
- addr = htobe32((h & UINT32_C(0x0000FFFF)) | IPV4LL_NETWORK);
- } while (addr == ll->address ||
- IN_SET(be32toh(addr) & 0x0000FF00U, 0x0000U, 0xFF00U));
-
- (void) in_addr_to_string(AF_INET, &(union in_addr_union) { .in.s_addr = addr }, &address);
- log_ipv4ll(ll, "Picked new IP address %s.", strna(address));
-
- return sd_ipv4ll_set_address(ll, &(struct in_addr) { addr });
-}
-
-#define MAC_HASH_KEY SD_ID128_MAKE(df,04,22,98,3f,ad,14,52,f9,87,2e,d1,9c,70,e2,f2)
-
-static int ipv4ll_start_internal(sd_ipv4ll *ll, bool reset_generation) {
- int r;
- bool picked_address = false;
-
- assert_return(ll, -EINVAL);
- assert_return(!ether_addr_is_null(&ll->mac), -EINVAL);
-
- /* If no random seed is set, generate some from the MAC address */
- if (!ll->seed_set)
- ll->seed.value = htole64(siphash24(ll->mac.ether_addr_octet, ETH_ALEN, MAC_HASH_KEY.bytes));
-
- if (reset_generation)
- ll->seed.generation = 0;
-
- if (ll->address == 0) {
- r = ipv4ll_pick_address(ll);
- if (r < 0)
- return r;
-
- picked_address = true;
- }
-
- r = sd_ipv4acd_start(ll->acd, reset_generation);
- if (r < 0) {
-
- /* We couldn't start? If so, let's forget the picked address again, the user might make a change and
- * retry, and we want the new data to take effect when picking an address. */
- if (picked_address)
- ll->address = 0;
-
- return r;
- }
-
- return 1;
-}
-
-int sd_ipv4ll_start(sd_ipv4ll *ll) {
- assert_return(ll, -EINVAL);
-
- if (sd_ipv4ll_is_running(ll))
- return 0;
-
- return ipv4ll_start_internal(ll, true);
-}
-
-int sd_ipv4ll_restart(sd_ipv4ll *ll) {
- ll->address = 0;
-
- return ipv4ll_start_internal(ll, false);
-}
-
-static void ipv4ll_client_notify(sd_ipv4ll *ll, int event) {
- assert(ll);
-
- if (ll->callback)
- ll->callback(ll, event, ll->userdata);
-}
-
-void ipv4ll_on_acd(sd_ipv4acd *acd, int event, void *userdata) {
- sd_ipv4ll *ll = userdata;
- IPV4LL_DONT_DESTROY(ll);
- int r;
-
- assert(acd);
- assert(ll);
-
- switch (event) {
-
- case SD_IPV4ACD_EVENT_STOP:
- ipv4ll_client_notify(ll, SD_IPV4LL_EVENT_STOP);
- ll->claimed_address = 0;
- break;
-
- case SD_IPV4ACD_EVENT_BIND:
- ll->claimed_address = ll->address;
- ipv4ll_client_notify(ll, SD_IPV4LL_EVENT_BIND);
- break;
-
- case SD_IPV4ACD_EVENT_CONFLICT:
- /* if an address was already bound we must call up to the
- user to handle this, otherwise we just try again */
- if (ll->claimed_address != 0) {
- ipv4ll_client_notify(ll, SD_IPV4LL_EVENT_CONFLICT);
-
- ll->claimed_address = 0;
- } else {
- r = sd_ipv4ll_restart(ll);
- if (r < 0)
- goto error;
- }
-
- break;
-
- default:
- assert_not_reached();
- }
-
- return;
-
-error:
- ipv4ll_client_notify(ll, SD_IPV4LL_EVENT_STOP);
-}
-
-static int ipv4ll_check_mac(sd_ipv4acd *acd, const struct ether_addr *mac, void *userdata) {
- sd_ipv4ll *ll = userdata;
-
- assert(ll);
-
- if (ll->check_mac_callback)
- return ll->check_mac_callback(ll, mac, ll->check_mac_userdata);
-
- return 0;
-}
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